Dial feed



Sept. 7,1925. 1,598,836 Y H. c. H. WALSH DIAL FEED 3 Sheets-Sheet 1 Filed June 14, 1922 zvelzff gar@ CCH.' WQZS,

H. C. H.l WALSH l Sept. 7 1926.

DIAL FEED Filed June 14, 1922 v @mili ,.4/Illll l,

v .Tilt l ls ZW/ @ffy j Sept. 7 1926.

H. C. H, WALSH DIAL FEED Filed June 14, v1922 3 Sheets-Sheet 5 Wm.. Km. @E WKN Tv/venan' W lJWIN llllll/ ing acljustebly of being xy whe@ form of O11. the eetl evetl a crank punc eclpreble cliz-g l'e device takes une Lf machine die heel l lence l'eclplsocetee i3 oft the iecl' "lor the pupese olf lculf treme El, fly vv 1s ce leve).

plu t c lm constantly Yetl *111g l eliecl mm.' with e Vbztse cast ch e `m (ne .nk elxe'lt Lec le :lum/mm* zcreek xewtl 17. e the peet Wlll etlle (Alfze the @11d e Otel the crees l plled t ce IT L ceti close( VLce te 10,3

1 June i Application n echi wel per

each Werk YSup means the lp-'eetl m of e dial; olf dial 18 mounted te felc en a, vefyt will ete accu'ecv of 18 is made porte, *.v'hc'h, in

es eclnM-y 'Z5 the 'the operative le punch 20 S0 femm/'ed Elem E new Wel-lz. ned lximilimlly c1'cum-- s ily o `permlit the mention e f as (,'lctet'ed by le' dial cui nlY euch e 'dent unclefetced `that t :Xie

w erlf trave are t WV

he tu lie 2L alle dial, Q11

l e plm' leeen `QJ.^ 'MLUJ removal may be per automti c el l v me fo the p ecc teele e "Htl uch

el: stance".

" ,il l? lt@ pesiteu e0 that ee pesltlvely and C1 comp et simple me te cual n Figs. 5 and 6', 'the dial es by cap eci-@We 22 te 95 11g lts real eftleee eth presented leem,

As shown beet 1 18 1e z lgldly secu" auch le baci;

tien on 'the Wollt.

evi clownwardl the dial vel gem' h The 18 is iupported be vertically te ertlcel e t 1n casting 24e. l"

ee casting 2%,

1 e. nig 1S tllllietl et te bottom Surface oit by and femm-bly elldee`l` o which caetl ion of 'the punch rlevle tll my Wi plan view et thY ie a eide eleve gpecl prese,

the ly feline a s m ucl 01' .Lt on the upper 'X a prees li umfang a prese 'llt in gear 23 parte revelvnv es a A per pfefer uelung 2" pin 25 The b end of stud 25 and le and cllel 1S, ea

en t

The cil steel Washer 28 is prevented from rotating e Stud 25 is `threaded between which nut 27 dial 1S there vis inum't on pin 2f.

rEhe upper end of th to receive a nut 2'?" and the `upper surface 0 tegeeecl an upper steel Washer 28 and an 110 it will e ebintermedate ber` thrust Washer 29.

the l' ien on at.' u le r means of bolts 33.

on the pin by means of a Voodruff key while the liber washer 29may or may not.

in intimate contact with the uppersurface of base casting 24, thereby preventing separation of the sliding surfaces and el1mina"- ing shake and ingress of foreign matter.

Below the level of the dial 18'the bed4 plate 24 is made with a lateral extension comprising an integral part 31 and apart secured to the face of extension 31 by Said extension parts are cored out to admit a horizontal shaft 34 the inner end of which is rotatably supported in a bearing 35, and the outer end in a bear'- inO' 36. Gn the inner end of said horizontal shaft 34 there is keyed a bevel pinion 37 lo.- cated in a. recess 38 and meshing with the bevel geai 23 previously referred to. On the outer end of the shaft 34 there is keyed a ratchet wheel 39` and on the opposite sides of ratchet wheel 39 and loosely journaled on the end of shaft 34 there are two oscillating arms or levers 40 and 41. Preferably the lever 41 is enlarged as shown at 42 in order to conceal and protect the ratchet mechanism. The arms 40 and 41 are connected to move as a unit by pins or bolts 43, 44 and 45. Reciprocatory motion is imparted to the pair of arms 40 and 41y byA means of the connecting rod 16 thelower end of which is enlarged and drilled out to pivotally connect with the pin 43.

On the pin 44 thereris pivotally'mounted a pawl 45a which is arranged to engage with the ratchet teeth 46 on ratchet wheel 39,

said pawl 45n being held up to its work rby means of a small coiled compression spring 47 having its ends seated in: recesses formed respectively in the back of pawl 45a and in the face of a lug 48 formed on the arm 41. Retrograde movements of the ratchet wheel 39 are prevented by a retaining pawl 49 pivotally carried by a fixed pin 50 secured in an aperture horizontally drilled in an upstanding` lug 51 on the end of extension casting 32. Y

In order to facilitate adjustment of the retaining pawl 49, the pin 50 is madewith an eccentric enlargement 52 whereby, upon rotation of said pin enlargement 52 in lug 51, the point of pawl 49 can be advanced or retracted circumferentially around ratchet wheel 34. When the proper adjustment has been established, pin 52may be locked in position by set screw 53. y.

It will be manifest that as the punch press operates, the reciprocation of rod 16 will cause intermittent step-by--step rotary move, ments of the shaft 34V which will result in' corresponding step-by-step rotary movements of the carrier dial 18.V Obviously, the

angular` spacing between the work support openings 19 correspond with each step-bystep movement of 'said dial. If mechanical perfection could be reached, and if there were no inertia of the moving parts, it might be possible to operate the dial feed without further provision for exact register between the position of the punch and die and the location `of the work supports as successively moved into the operating field of said punch and die. However, I have found that be. cause of mechanical and shop practice limitations and because Vof the inertia of the parts, it is necessary in most cases to provide further special means for insuring a more perfect register between the punch and die and the successive work supports. To this end, I employ the `following arrangement. After the openings or work ysupports 19 on the dial have been laid out and finished up as accurately as is desired or practical under the circumstances, each of the work supports or openings 19 is utilized as a guide or jig for they purpose of laying out and drilling its corresponding registering part, in this instance one of the dowel openings 53l Sin-ce the center of the stationary dowel position is represented by numeral 54, and the operating center of the punch and die is represented by numeral 55, it is merely necessary to provide that the angle A shall be accurate as Vto each of the dowel holes 53 and its corresponding work support.

The dowel pin 56 slidably reciprocates in a cylindrical bore 57 drilled vertically into casting 24,'the upper end of thedowel pin being slightly rounded or tapered as shown at 58 so that it will find its way into the dowel hole in spite of considerable variation of position or lack of register of the dial.

Intermediate its ends, the bore 57 is cut out at the side to make room for an oscillating arm or finger 59, the outer end of which is rounded as indicated at 60 to engage the edges of a rectangular notch cut in the side of .dowel pi-n 56. Arm 59 is keyed on the end of a horizontal shaft 61extending under a flanged cover 62 formed integral with the extension part 32. The shaft 61 is mounted to rock or pivot on a pair of adjustable centers 63 and 64 mounted in lugs 65 and 66, said type of pivotal mounting being selected in order to reduce friction to a minimum while enabling accurate adjustment of the shaft to be made. On the outer' end of the rock shaft 61 there is keyed a dog 67 equipped with a pair of integral arms 68 and 69. Said arms 68 and 69 are suitably shaped and positioned as to be 'engaged at the proper time by a roller 70 on pin 45, when the arms 40 and 41 are reciprocated by rod 16. In conjunction with the dog 67 and roller 70, the rocking action yof rock shaft 61 is controlled'by a cross-tha center-spring? mechanism.

xix

1 ,sesgacc Y iaid cross-tlmcenter-spring` mechanism is arranged to roclrorroscillatfe around the center ofa horizontal pin seated` inv an* aper# ture drilled inthe base plate .extension `81. lin 71 is a: running'lit andisheldin position longitudinally by a vertical pin/"2 entorn ed aroundisaid pin: 71; Onithe profeeting endV offsaid pin 71 thereY formed a head 711V to which is suitably united a ,tubular lateralcntension 'i' rlhc headi and tubular portion T5 are suitably bored'out to form a. sliding support for a plunger i 6, the outer end o f which is formedzivith an integral wedge shaped knife edge 177. engaging a lateral notch 8 on the back side or the hub of arm 59. Saidy plungerT-S is forced stronglyupw'arthi. e;, towardtho `center of' set screw 81 servesto advance asmall pingv shdably contained in the rear of tube 7e back end of the and iinst which the ing/H) abats. view of theabove detailed descrii'ition of the mechanism,,theoperation of same will he apparent to those` skilled in the artr. lt Till be understood that the downwardor advancing strokeof'thefrod 16 occurs dui. g that portion of the `revolutionrof the-press crank shaft when the punchandsdic or other operative tool is out of engagement with the wort so that the dial may. revolve without interference. lli/Then the rod 16 d scends, the pawl 45 engages one of the ratchet teeth t6 and rotates the shaft 34 one notch, pawl i9 preventing the shaft from being retracted. J ust before the ratchet wheel 39 completes its movement, the roller 7 O strikes the inner face of arm 68 androcks the shaft 61. The rocking of shaft 61, also, by reason of the engagement of knife edge 77 with notch 78 of the hub of arm 59, causes a rocking action of stud 71 which carries the across-tlie-center-spring mechanism, the arrangement being' such that the roller 70 turns the shaft far enough to permit the knife edge 77 to cross a center line connecting the axis of shaft 61 and axis of pin 71. As soon as this occurs, the spring 79 acts in a direction to assist continued rotation of shaft 61 which then snaps forward under the influence of the cross-the-center-spring mechanism and throws up pin 56 through the engagement of the latter by the end of arm 59. lf at that time the dowel hole of the dial is slightly out `of register with the dial pin 56, the tapered end 58 of said pin will nev ztheless enter the dowel hole and accurately position, locate and lock the dial in proper register.

ng inf av groove 73 circumferentially- Upon lthe return or upward stroke of the rod` 16 the roller 70 will engage the arro 69 causing afreverse rotation of will cause the arm to vi' pin C6 from out of the df `Vel hole inthe dial.v Hence, on the nez-it "e ofthe machine w ren the dial is advanced, the dowel pin156 will not interfere i step movement; ililhen the J ned toiviilitli24 i fel, 4 .l `of'tlfic cross-the-center mech ed to a position slightiy ae" line, thereby holding dov-fel" bottom of bore 5i" until roller nent stroke of the pres:

The' described de operation are merel'Q gle phase of my inven which should be determi the appended clai s, strued asfbroadly: aspY the state ofthe art.

I 1claiin` asmy invention 1. in a feed device, the combination the opei `ive machine,-of an endiess .fr provid series of work lraw the dowei i edlby re Yerence to ms being con- U' sable, consistent witn ed with ak means intermittently adafa'nc said carrier step by step tobriiig, the w( on aid supports successively into the ope field of the machine, and register mechanism comprising a men'ibci'a-dapted to interlock with the carrier intermediate stepby-step movements of the latter, the carrier having its cooperatinginterlocking parts respectively definitely located with respect to the work supports wherebythe work supports will be successively registeredwith the machine, and actuating means for said member including across-thecenter-spring mechanism controlled by the advancing means.

2. In combination, a rotary feed member, a shaft, gearing for driving the feed member from the shaft, ratchet mechanism for rotating the shaft intermittently step by step, and doivel mechanism actuated by the ratchet mechanism for positioning the feed member.

3. In combination, an axially vertical feeding dial, a horizontal shaft, beveled gearing for driving the dial from the shaft, ratchet mechanism fo-r rotating the shaft step by step and dowel mechanism actuated by the ratchet mechanism for positioning and locking the dial;

4. In combination, an axially vertical 29 feeding dial, a horizontal shaft, bevel gearing for driving the dial from the shaft, ratchet mechanism for rotating the shaft, doweling means actuated along with the ratchet mechanism for positioning the dial and a cross-thecenter-spring mechanism for controlling the dowcl.

5.111 combination, a feed dial, a drive shaft therefor, bevel gearing connecting the shaft and dial, step by step mechanism for rotating said drive shaft, a member adapted to have interlocking engagement with the `dial vin the successive positionsof the latter,

shaft and dial, step by step mechanism fork rotating said drive shaft, amember adapted to have interlocking engagement with the dial in the successive positions of the latter, a roclr shaft parallel with the driving shaft for controlling said member and thereby engaging and disengaging the dial and means operated by the step by step mechanism for act ating the rock shaft.

7. ln combination, a feet dial, a drive shaft therefor, bevel gearing connecting the shaft and dial, step by step mechanism for rotating said drive shaft, a member adapted to have interlocking engagement With the dial in the successive positions of the latter.

a rock shaft parallel With the driving shaftv for controlling said member and thereby engaging and disengaging the dial and means operated by the step by step mechanism for actuating the rocl: shaft, and a cross-thecenter-spring mechanism for *locking saidA rock shaft in its engaged and disengaged positions.

S. In combination, a feed dial provided with a series of dovvel apertures, a horizontal drive shaft, bevel gearing connecting the shaft andV dial, step bystep mechanism including an oscillatingarm, paWl and ratchet,l

Apin and means onsaid arm for rocking saidV rock shaft. Y

9. In combination, a feedidial provided With series of dowel apertures, a horizontal drive shaft, bevel gearing connecting the shaft and dial, step by step mechanism including an oscillating arm, pawl and ratchet,

for elfectingvstep by step advancing movements of the drive shaft-corresponding with the spacing of said apertures, a doWel pin having its axis stationary and adapted to successively engage the said apertures to position and lock the dial, a rock shaft parallel with the drive shaft and having a finger thereon for reciprocating the dowel pin and means on Said arm for rocking said rock shaft, and 'a cross-tlie-center-spring mechanism cooperating With said finger for controlling the movementv of said rock shaft.

l0. In a feeding device, a rotary member provided with a seiies of apertures, means including a rock shaft for intermittently rotating's-aid member, means for .positioning said member comprising a doWel-pin adapted to be moved into one of said apertures, and means actuated by said rock shaft for so moving said doWel-pin.

HARRY o.- ri. WALsH. 

